In a deposition read aloud at the civil trial against Beacon High School chemistry teacher Anna Poole, she describes the moment a lab demo caused a fireball that engulfed 10th-grader Alonzo Yanes, who is now seeking $27 million in damages.

“I remember looking up and seeing him rolling on the floor and I remember him screaming,” she said in a 2017 deposition, for which she was under questioning by Yanes’ lawyers.

The reading of Poole’s deposition in Manhattan Supreme Court Thursday is the first public airing of her account of the accident that left Yanes permanently disfigured.

But while the now-21-year-old will never forget that 2013 afternoon in Room 317 of the prestigious Upper West Side school, Poole herself said she has little memory of it.

“I have no recollection of performing the experiment,” she said in the deposition.

“I was traumatized. I was in shock. I remember feeling very confused,” she said when asked about statements she made to officials after the accident.

“So I don’t know that after hours of questioning what I said was accurate or inaccurate … I have no memory of anything until I looked up and Alonzo was on fire.

“I recall hearing Alonzo’s screams.”

Yanes’ parents are due to begin testimony Thursday afternoon.

On Tuesday, a former classmate testified that she suffered relatively minor burns on her forearms in the experiment, and that Yanes was withdrawn and taunted afterward.

Yanes has lost his sense of touch, is permanently disfigured in his face, torso and hands, and has been too afraid of his looks to make friends or start an intimate relationship, his lawyer said during opening statements on Monday.